1 /* Copyright (C) 1995-1999 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
61 /* {Names of immediate symbols}
63 * This table must agree with the declarations in scm.h: {Immediate Symbols}.
66 char *scm_isymnames
[] =
68 /* This table must agree with the declarations */
84 "#@literal-variable-ref",
85 "#@literal-variable-set!",
88 "#@call-with-current-continuation",
90 /* user visible ISYMS */
104 /* Multi-language support */
117 scm_option scm_print_opts
[] = {
118 { SCM_OPTION_SCM
, "closure-hook", SCM_BOOL_F
,
119 "Hook for printing closures." },
120 { SCM_OPTION_BOOLEAN
, "source", 0,
121 "Print closures with source." }
124 SCM_PROC (s_print_options
, "print-options-interface", 0, 1, 0, scm_print_options
);
127 scm_print_options (setting
)
130 SCM ans
= scm_options (setting
,
138 /* {Printing of Scheme Objects}
141 /* Detection of circular references.
143 * Due to other constraints in the implementation, this code has bad
144 * time complexity (O (depth * N)), The printer code will be
145 * completely rewritten before next release of Guile. The new code
148 #define PUSH_REF(pstate, obj) \
150 pstate->ref_stack[pstate->top++] = (obj); \
151 if (pstate->top == pstate->ceiling) \
152 grow_ref_stack (pstate); \
155 #define ENTER_NESTED_DATA(pstate, obj, label) \
157 register unsigned long i; \
158 for (i = 0; i < pstate->top; ++i) \
159 if (pstate->ref_stack[i] == (obj)) \
161 if (pstate->fancyp) \
163 if (pstate->top - pstate->list_offset >= pstate->level) \
165 scm_putc ('#', port); \
169 PUSH_REF(pstate, obj); \
172 #define EXIT_NESTED_DATA(pstate) { --pstate->top; }
174 SCM scm_print_state_vtable
;
176 static SCM print_state_pool
;
178 #ifdef GUILE_DEBUG /* Used for debugging purposes */
179 SCM_PROC(s_current_pstate
, "current-pstate", 0, 0, 0, scm_current_pstate
);
182 scm_current_pstate ()
184 return SCM_CADR (print_state_pool
);
188 #define PSTATE_SIZE 50L
190 static SCM make_print_state
SCM_P ((void));
195 SCM print_state
= scm_make_struct (SCM_CAR (print_state_pool
), /* pstate type */
198 scm_print_state
*pstate
= SCM_PRINT_STATE (print_state
);
199 pstate
->ref_vect
= scm_make_vector (SCM_MAKINUM (PSTATE_SIZE
),
201 pstate
->ref_stack
= SCM_VELTS (pstate
->ref_vect
);
202 pstate
->ceiling
= SCM_LENGTH (pstate
->ref_vect
);
207 scm_make_print_state ()
211 /* First try to allocate a print state from the pool */
213 if (SCM_NNULLP (SCM_CDR (print_state_pool
)))
215 answer
= SCM_CADR (print_state_pool
);
216 SCM_SETCDR (print_state_pool
, SCM_CDDR (print_state_pool
));
220 return answer
? answer
: make_print_state ();
224 scm_free_print_state (print_state
)
228 scm_print_state
*pstate
= SCM_PRINT_STATE (print_state
);
229 /* Cleanup before returning print state to pool.
230 * It is better to do it here. Doing it in scm_prin1
231 * would cost more since that function is called much more
235 pstate
->revealed
= 0;
236 SCM_NEWCELL (handle
);
238 SCM_SETCAR (handle
, print_state
);
239 SCM_SETCDR (handle
, SCM_CDR (print_state_pool
));
240 SCM_SETCDR (print_state_pool
, handle
);
244 static void grow_ref_stack
SCM_P ((scm_print_state
*pstate
));
247 grow_ref_stack (pstate
)
248 scm_print_state
*pstate
;
250 int new_size
= 2 * pstate
->ceiling
;
251 scm_vector_set_length_x (pstate
->ref_vect
, SCM_MAKINUM (new_size
));
252 pstate
->ref_stack
= SCM_VELTS (pstate
->ref_vect
);
253 pstate
->ceiling
= new_size
;
257 static void print_circref
SCM_P ((SCM port
, scm_print_state
*pstate
, SCM ref
));
260 print_circref (port
, pstate
, ref
)
262 scm_print_state
*pstate
;
266 int self
= pstate
->top
- 1;
268 if (SCM_CONSP (pstate
->ref_stack
[i
]))
272 if (SCM_NCONSP (pstate
->ref_stack
[i
- 1])
273 || SCM_CDR (pstate
->ref_stack
[i
- 1]) != pstate
->ref_stack
[i
])
279 for (i
= pstate
->top
- 1; 1; --i
)
280 if (pstate
->ref_stack
[i
] == ref
)
282 scm_putc ('#', port
);
283 scm_intprint (i
- self
, 10, port
);
284 scm_putc ('#', port
);
287 /* Print generally. Handles both write and display according to PSTATE.
289 SCM_GPROC(s_write
, "write", 1, 1, 0, scm_write
, g_write
);
290 SCM_GPROC(s_display
, "display", 1, 1, 0, scm_display
, g_display
);
293 scm_iprin1 (exp
, port
, pstate
)
296 scm_print_state
*pstate
;
299 switch (7 & (int) exp
)
303 scm_intprint (SCM_INUM (exp
), 10, port
);
311 if (SCM_WRITINGP (pstate
))
313 scm_puts ("#\\", port
);
314 if ((i
>= 0) && (i
<= ' ') && scm_charnames
[i
])
315 scm_puts (scm_charnames
[i
], port
);
316 else if (i
< 0 || i
> '\177')
317 scm_intprint (i
, 8, port
);
324 else if (SCM_IFLAGP (exp
)
325 && ((size_t) SCM_ISYMNUM (exp
) < (sizeof scm_isymnames
/ sizeof (char *))))
326 scm_puts (SCM_ISYMCHARS (exp
), port
);
327 else if (SCM_ILOCP (exp
))
329 scm_puts ("#@", port
);
330 scm_intprint ((long) SCM_IFRAME (exp
), 10, port
);
331 scm_putc (SCM_ICDRP (exp
) ? '-' : '+', port
);
332 scm_intprint ((long) SCM_IDIST (exp
), 10, port
);
339 scm_puts ("#@", port
);
340 exp
= SCM_CAR (exp
- 1);
344 scm_ipruk ("immediate", exp
, port
);
347 switch (SCM_TYP7 (exp
))
349 case scm_tcs_cons_gloc
:
351 if (SCM_CDR (SCM_CAR (exp
) - 1L) == 0)
353 ENTER_NESTED_DATA (pstate
, exp
, circref
);
354 if (SCM_OBJ_CLASS_FLAGS (exp
) & SCM_CLASSF_GOOPS
)
356 SCM pwps
, print
= pstate
->writingp
? g_write
: g_display
;
360 scm_tc16_port_with_ps
,
361 scm_cons (port
, pstate
->handle
));
362 scm_call_generic_2 (print
, exp
, pwps
);
367 scm_print_struct (exp
, port
, pstate
);
369 EXIT_NESTED_DATA (pstate
);
373 case scm_tcs_cons_imcar
:
374 case scm_tcs_cons_nimcar
:
375 ENTER_NESTED_DATA (pstate
, exp
, circref
);
376 scm_iprlist ("(", exp
, ')', port
, pstate
);
377 EXIT_NESTED_DATA (pstate
);
380 print_circref (port
, pstate
, exp
);
383 if (!SCM_CLOSUREP (SCM_CDR (exp
)))
385 case scm_tcs_closures
:
386 /* The user supplied print closure procedure must handle
387 macro closures as well. */
388 if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE
))
389 || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE
,
393 if (SCM_TYP16 (exp
) == scm_tc16_macro
)
395 /* Printing a macro. */
397 name
= scm_macro_name (exp
);
398 if (!SCM_CLOSUREP (SCM_CDR (exp
)))
401 scm_puts ("#<primitive-", port
);
405 code
= SCM_CODE (SCM_CDR (exp
));
406 env
= SCM_ENV (SCM_CDR (exp
));
407 scm_puts ("#<", port
);
409 if (SCM_CAR (exp
) & (3L << 16))
410 scm_puts ("macro", port
);
412 scm_puts ("syntax", port
);
413 if (SCM_CAR (exp
) & (2L << 16))
414 scm_putc ('!', port
);
418 /* Printing a closure. */
419 name
= scm_procedure_name (exp
);
420 code
= SCM_CODE (exp
);
422 scm_puts ("#<procedure", port
);
424 if (SCM_NIMP (name
) && SCM_ROSTRINGP (name
))
426 scm_putc (' ', port
);
427 scm_puts (SCM_ROCHARS (name
), port
);
431 if (SCM_PRINT_SOURCE_P
)
433 code
= scm_unmemocopy (code
,
434 SCM_EXTEND_ENV (SCM_CAR (code
),
437 ENTER_NESTED_DATA (pstate
, exp
, circref
);
438 scm_iprlist (" ", code
, '>', port
, pstate
);
439 EXIT_NESTED_DATA (pstate
);
443 if (SCM_TYP16 (exp
) != scm_tc16_macro
)
445 scm_putc (' ', port
);
446 scm_iprin1 (SCM_CAR (code
), port
, pstate
);
448 scm_putc ('>', port
);
452 scm_putc ('>', port
);
455 case scm_tc7_substring
:
457 if (SCM_WRITINGP (pstate
))
461 scm_putc ('"', port
);
462 for (i
= 0; i
< SCM_ROLENGTH (exp
); ++i
)
463 switch (SCM_ROCHARS (exp
)[i
])
467 scm_putc ('\\', port
);
469 scm_putc (SCM_ROCHARS (exp
)[i
], port
);
471 scm_putc ('"', port
);
475 scm_lfwrite (SCM_ROCHARS (exp
), (scm_sizet
) SCM_ROLENGTH (exp
),
478 case scm_tcs_symbols
:
488 len
= SCM_LENGTH (exp
);
489 str
= SCM_CHARS (exp
);
496 scm_lfwrite ("#{}#", 4, port
);
498 for (end
= pos
; end
< len
; ++end
)
501 #ifdef BRACKETS_AS_PARENS
509 case SCM_WHITE_SPACES
:
510 case SCM_LINE_INCREMENTORS
:
519 scm_lfwrite ("#{", 2, port
);
524 scm_lfwrite (str
+ pos
, end
- pos
, port
);
530 scm_lfwrite (buf
, 2, port
);
552 scm_lfwrite (str
+ pos
, end
- pos
, port
);
554 scm_lfwrite ("}#", 2, port
);
558 ENTER_NESTED_DATA (pstate
, exp
, circref
);
559 if (SCM_IS_WHVEC (exp
))
560 scm_puts ("#wh(", port
);
562 scm_puts ("#w(", port
);
563 goto common_vector_printer
;
566 ENTER_NESTED_DATA (pstate
, exp
, circref
);
567 scm_puts ("#(", port
);
568 common_vector_printer
:
571 int last
= SCM_LENGTH (exp
) - 1;
573 if (pstate
->fancyp
&& SCM_LENGTH (exp
) > pstate
->length
)
575 last
= pstate
->length
- 1;
578 for (i
= 0; i
< last
; ++i
)
581 scm_iprin1 (SCM_VELTS (exp
)[i
], port
, pstate
);
582 scm_putc (' ', port
);
587 scm_iprin1 (SCM_VELTS (exp
)[i
], port
, pstate
);
590 scm_puts (" ...", port
);
591 scm_putc (')', port
);
593 EXIT_NESTED_DATA (pstate
);
603 #ifdef HAVE_LONG_LONGS
606 scm_raprin1 (exp
, port
, pstate
);
609 scm_puts (SCM_SUBR_GENERIC (exp
) && *SCM_SUBR_GENERIC (exp
)
610 ? "#<primitive-generic "
611 : "#<primitive-procedure ",
613 scm_puts (SCM_CHARS (SCM_SNAME (exp
)), port
);
614 scm_putc ('>', port
);
619 SCM proc
= SCM_CCLO_SUBR (exp
);
620 if (proc
== scm_f_gsubr_apply
)
622 /* Print gsubrs as primitives */
623 SCM name
= scm_procedure_name (exp
);
624 scm_puts ("#<primitive-procedure", port
);
625 if (SCM_NFALSEP (name
))
627 scm_putc (' ', port
);
628 scm_puts (SCM_CHARS (name
), port
);
633 scm_puts ("#<compiled-closure ", port
);
634 scm_iprin1 (proc
, port
, pstate
);
636 scm_putc ('>', port
);
641 scm_puts ("#<procedure-with-setter", port
);
643 SCM name
= scm_procedure_name (exp
);
644 if (SCM_NFALSEP (name
))
646 scm_putc (' ', port
);
647 scm_puts (SCM_ROCHARS (name
), port
);
650 scm_putc ('>', port
);
653 scm_puts ("#<continuation ", port
);
654 scm_intprint (SCM_LENGTH (exp
), 10, port
);
655 scm_puts (" @ ", port
);
656 scm_intprint ((long) SCM_CHARS (exp
), 16, port
);
657 scm_putc ('>', port
);
661 register long i
= SCM_PTOBNUM (exp
);
663 && scm_ptobs
[i
].print
664 && (scm_ptobs
[i
].print
) (exp
, port
, pstate
))
671 ENTER_NESTED_DATA (pstate
, exp
, circref
);
672 i
= SCM_SMOBNUM (exp
);
673 if (i
< scm_numsmob
&& scm_smobs
[i
].print
674 && (scm_smobs
[i
].print
) (exp
, port
, pstate
))
676 EXIT_NESTED_DATA (pstate
);
679 EXIT_NESTED_DATA (pstate
);
680 /* Macros have their print field set to NULL. They are
681 handled at the same place as closures in order to achieve
682 non-redundancy. Placing the condition here won't slow
683 down printing of other smobs. */
684 if (SCM_TYP16 (exp
) == scm_tc16_macro
)
689 scm_ipruk ("type", exp
, port
);
694 /* Print states are necessary for circular reference safe printing.
695 * They are also expensive to allocate. Therefore print states are
696 * kept in a pool so that they can be reused.
699 /* The PORT argument can also be a print-state/port pair, which will
700 * then be used instead of allocating a new print state. This is
701 * useful for continuing a chain of print calls from Scheme. */
704 scm_prin1 (exp
, port
, writingp
)
709 SCM handle
= SCM_BOOL_F
; /* Will GC protect the handle whilst unlinked */
711 scm_print_state
*pstate
;
713 /* If PORT is a print-state/port pair, use that. Else create a new
716 if (SCM_NIMP (port
) && SCM_PORT_WITH_PS_P (port
))
718 pstate_scm
= SCM_PORT_WITH_PS_PS (port
);
719 port
= SCM_PORT_WITH_PS_PORT (port
);
723 /* First try to allocate a print state from the pool */
725 if (SCM_NNULLP (SCM_CDR (print_state_pool
)))
727 handle
= SCM_CDR (print_state_pool
);
728 SCM_SETCDR (print_state_pool
, SCM_CDDR (print_state_pool
));
731 if (handle
== SCM_BOOL_F
)
732 handle
= scm_cons (make_print_state (), SCM_EOL
);
733 pstate_scm
= SCM_CAR (handle
);
736 pstate
= SCM_PRINT_STATE (pstate_scm
);
737 pstate
->writingp
= writingp
;
738 scm_iprin1 (exp
, port
, pstate
);
740 /* Return print state to pool if it has been created above and
741 hasn't escaped to Scheme. */
743 if (handle
!= SCM_BOOL_F
&& !pstate
->revealed
)
746 SCM_SETCDR (handle
, SCM_CDR (print_state_pool
));
747 SCM_SETCDR (print_state_pool
, handle
);
757 scm_intprint (n
, radix
, port
)
762 char num_buf
[SCM_INTBUFLEN
];
763 scm_lfwrite (num_buf
, scm_iint2str (n
, radix
, num_buf
), port
);
766 /* Print an object of unrecognized type.
770 scm_ipruk (hdr
, ptr
, port
)
775 scm_puts ("#<unknown-", port
);
776 scm_puts (hdr
, port
);
779 scm_puts (" (0x", port
);
780 scm_intprint (SCM_CAR (ptr
), 16, port
);
781 scm_puts (" . 0x", port
);
782 scm_intprint (SCM_CDR (ptr
), 16, port
);
783 scm_puts (") @", port
);
785 scm_puts (" 0x", port
);
786 scm_intprint (ptr
, 16, port
);
787 scm_putc ('>', port
);
795 scm_iprlist (hdr
, exp
, tlr
, port
, pstate
)
800 scm_print_state
*pstate
;
802 register SCM hare
, tortoise
;
803 int floor
= pstate
->top
- 2;
804 scm_puts (hdr
, port
);
809 /* Run a hare and tortoise so that total time complexity will be
810 O(depth * N) instead of O(N^2). */
811 hare
= SCM_CDR (exp
);
813 while (SCM_NIMP (hare
) && SCM_ECONSP (hare
))
815 if (hare
== tortoise
)
817 hare
= SCM_CDR (hare
);
818 if (SCM_IMP (hare
) || SCM_NECONSP (hare
))
820 hare
= SCM_CDR (hare
);
821 tortoise
= SCM_CDR (tortoise
);
824 /* No cdr cycles intrinsic to this list */
825 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
827 for (; SCM_NIMP (exp
); exp
= SCM_CDR (exp
))
831 if (SCM_NECONSP (exp
))
833 for (i
= floor
; i
>= 0; --i
)
834 if (pstate
->ref_stack
[i
] == exp
)
836 PUSH_REF (pstate
, exp
);
837 scm_putc (' ', port
);
839 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
841 if (SCM_NNULLP (exp
))
843 scm_puts (" . ", port
);
844 scm_iprin1 (exp
, port
, pstate
);
848 scm_putc (tlr
, port
);
849 pstate
->top
= floor
+ 2;
854 int n
= pstate
->length
;
856 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
857 exp
= SCM_CDR (exp
); --n
;
858 for (; SCM_NIMP (exp
); exp
= SCM_CDR (exp
))
860 register unsigned long i
;
862 if (SCM_NECONSP (exp
))
864 for (i
= 0; i
< pstate
->top
; ++i
)
865 if (pstate
->ref_stack
[i
] == exp
)
871 scm_puts (" ...", port
);
877 PUSH_REF(pstate
, exp
);
878 ++pstate
->list_offset
;
879 scm_putc (' ', port
);
881 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
884 if (SCM_NNULLP (exp
))
886 scm_puts (" . ", port
);
887 scm_iprin1 (exp
, port
, pstate
);
890 pstate
->list_offset
-= pstate
->top
- floor
- 2;
894 pstate
->list_offset
-= pstate
->top
- floor
- 2;
897 scm_puts (" . ", port
);
898 print_circref (port
, pstate
, exp
);
905 scm_valid_oport_value_p (SCM val
)
907 return (SCM_NIMP (val
)
908 && (SCM_OPOUTPORTP (val
)
909 || (SCM_PORT_WITH_PS_P (val
)
910 && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val
)))));
913 /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */
916 scm_write (obj
, port
)
920 if (SCM_UNBNDP (port
))
923 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_write
);
925 scm_prin1 (obj
, port
, 1);
929 scm_close_port (port
);
932 return SCM_UNSPECIFIED
;
936 /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */
939 scm_display (obj
, port
)
943 if (SCM_UNBNDP (port
))
946 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_display
);
948 scm_prin1 (obj
, port
, 0);
952 scm_close_port (port
);
955 return SCM_UNSPECIFIED
;
958 SCM_PROC(s_newline
, "newline", 0, 1, 0, scm_newline
);
964 if (SCM_UNBNDP (port
))
967 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG1
, s_newline
);
969 scm_putc ('\n', SCM_COERCE_OUTPORT (port
));
970 return SCM_UNSPECIFIED
;
973 SCM_PROC(s_write_char
, "write-char", 1, 1, 0, scm_write_char
);
976 scm_write_char (chr
, port
)
980 if (SCM_UNBNDP (port
))
983 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_write_char
);
985 SCM_ASSERT (SCM_ICHRP (chr
), chr
, SCM_ARG1
, s_write_char
);
986 scm_putc ((int) SCM_ICHR (chr
), SCM_COERCE_OUTPORT (port
));
990 scm_close_port (port
);
993 return SCM_UNSPECIFIED
;
998 /* Call back to Scheme code to do the printing of special objects
999 * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob
1000 * containing PORT and PSTATE. This object can be used as the port for
1001 * display/write etc to continue the current print chain. The REVEALED
1002 * field of PSTATE is set to true to indicate that the print state has
1003 * escaped to Scheme and thus has to be freed by the GC.
1006 long scm_tc16_port_with_ps
;
1008 /* Print exactly as the port itself would */
1011 print_port_with_ps (SCM obj
, SCM port
, scm_print_state
*pstate
)
1013 obj
= SCM_PORT_WITH_PS_PORT (obj
);
1014 return scm_ptobs
[SCM_PTOBNUM (obj
)].print (obj
, port
, pstate
);
1018 scm_printer_apply (proc
, exp
, port
, pstate
)
1019 SCM proc
, exp
, port
;
1020 scm_print_state
*pstate
;
1023 SCM pair
= scm_cons (port
, pstate
->handle
);
1024 SCM_NEWSMOB (pwps
, scm_tc16_port_with_ps
, pair
);
1025 pstate
->revealed
= 1;
1026 return scm_apply (proc
, exp
, scm_cons (pwps
, scm_listofnull
));
1029 SCM_PROC (s_port_with_print_state
, "port-with-print-state", 2, 0, 0, scm_port_with_print_state
);
1032 scm_port_with_print_state (SCM port
, SCM pstate
)
1035 SCM_ASSERT (scm_valid_oport_value_p (port
),
1036 port
, SCM_ARG1
, s_port_with_print_state
);
1037 SCM_ASSERT (SCM_NIMP (pstate
) && SCM_PRINT_STATE_P (pstate
),
1038 pstate
, SCM_ARG2
, s_port_with_print_state
);
1039 port
= SCM_COERCE_OUTPORT (port
);
1040 SCM_NEWSMOB (pwps
, scm_tc16_port_with_ps
, scm_cons (port
, pstate
));
1044 SCM_PROC (s_get_print_state
, "get-print-state", 1, 0, 0, scm_get_print_state
);
1047 scm_get_print_state (SCM port
)
1049 if (SCM_NIMP (port
))
1051 if (SCM_PORT_WITH_PS_P (port
))
1052 return SCM_PORT_WITH_PS_PS (port
);
1053 if (SCM_OUTPORTP (port
))
1056 return scm_wta (port
, (char *) SCM_ARG1
, s_get_print_state
);
1064 SCM vtable
, layout
, type
;
1066 scm_init_opts (scm_print_options
, scm_print_opts
, SCM_N_PRINT_OPTIONS
);
1067 vtable
= scm_make_vtable_vtable (scm_make_struct_layout (scm_nullstr
),
1070 layout
= scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT
));
1071 type
= scm_make_struct (vtable
, SCM_INUM0
, SCM_LIST1 (layout
));
1072 scm_set_struct_vtable_name_x (type
, SCM_CAR (scm_intern0 ("print-state")));
1073 print_state_pool
= scm_permanent_object (scm_cons (type
, SCM_EOL
));
1075 scm_print_state_vtable
= type
;
1077 /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */
1078 scm_tc16_port_with_ps
= scm_make_smob_type (0, 0);
1079 scm_set_smob_mark (scm_tc16_port_with_ps
, scm_markcdr
);
1080 scm_set_smob_print (scm_tc16_port_with_ps
, print_port_with_ps
);